Dexter APUBR‑1 U‑Bolt Kit – For 2 3/8″ Round Axles, 3,500 lb Capacity

Secure your axle with confidence using the Dexter APUBR‑1 U‑Bolt Kit, designed for 2 3/8″ round trailer axles rated around 3,500 lb. This all‑inclusive kit contains the hardware necessary to attach your axle to leaf springs with durability and safety in mind.

Key Features:

• OEM Dexter Part #: APUBR‑1
  Purpose‑built to Dexter’s hardware specifications. 

• Fits 2 3/8″ Round Axles
  Suitable for many standard 3,500 lb trailer axle tubes. 

• Complete Hardware Kit
  Includes U‑bolts, plates, and nuts for full mounting setup. 

• Designed for 1¾″ Leaf Springs
  Common width for many trailer spring setups. 

Specifications:

• Part Number: APUBR‑1

• Kit Type: U‑Bolt mounting kit

• Intended Axle Capacity / Use: ~3,500 lb round axle 

• Axle Tube Size: 2 3/8″ round

• U‑Bolt Rod Diameter: 1/2″‑20 thread 

• U‑Bolt Leg Length: 5 1/2″ 

• Kit Includes:
    – 4 × U‑bolts (5 1/2″ long) 
    – 2 × U‑bolt plates for 1¾″ springs 
    – 8 × 1/2″‑20 hex nuts 

Application / Compatibility

The APUBR‑1 U‑Bolt Kit is suited for:

• Utility trailers

• Cargo / enclosed trailers

• Equipment trailers

• Many 3,500 lb trailer setups

• Trailers using 2 3/8″ round axles and 1¾″ leaf springs

Alternate Item Numbers

• 9100045
•  4202-HD
•  D40-APUBR-1-PB